Postgres 8.3 Function returning a row with different number of colums

[Gianpiero Venditti <stratio@xxxxxxxxxx>]

Hello, I need to write a function that sometimes return a row with only a column and sometimes return a row with two columns.

Is it possible to do something like this with record type?

If it's not what's the best alternative to achieve such a result?

Thanks in advance for your help.


Gianpiero Venditti